Tongue hygiene device



FIG. 1 is a bottom plan view, with bristles omitted, of a tongue hygiene device embodying our design;

FIG. 2 is a side elevational view, with bristles omiitted, of a tongue hygiene device embodying our design; and,

FIG. 3 is a top plan view, with bristles omitted, of a tongue hygiene device embodying our design. 

The ornamental design for a tongue hygiene device, as shown and described. 